./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/res2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 105e7597bd9cfde6146cefe87563ba1bc48309677fb8b2f1d1f421bc92453e6b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:57:33,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:57:33,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:57:33,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:57:33,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:57:33,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:57:33,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:57:33,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:57:33,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:57:33,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:57:33,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:57:33,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:57:33,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:57:33,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:57:33,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:57:33,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:57:33,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:57:33,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:57:33,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:57:33,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:57:33,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:57:33,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:57:33,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:57:33,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:57:33,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:57:33,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:57:33,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:57:33,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:57:33,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:57:33,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:57:33,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:57:33,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:57:33,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:57:33,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:57:33,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:57:33,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:57:33,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:57:33,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:57:33,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:57:33,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:57:33,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:57:33,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:57:33,267 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:57:33,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:57:33,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:57:33,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:57:33,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:57:33,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:57:33,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:57:33,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:57:33,271 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:57:33,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:57:33,272 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:57:33,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:57:33,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:57:33,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:57:33,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:57:33,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:57:33,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:57:33,274 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:57:33,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:57:33,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:57:33,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:57:33,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:57:33,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:57:33,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:57:33,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:57:33,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:57:33,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:57:33,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:57:33,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:57:33,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:57:33,277 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:57:33,277 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:57:33,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:57:33,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 105e7597bd9cfde6146cefe87563ba1bc48309677fb8b2f1d1f421bc92453e6b [2022-11-02 20:57:33,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:57:33,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:57:33,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:57:33,582 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:57:33,583 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:57:33,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/array-fpi/res2.c [2022-11-02 20:57:33,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/data/197fd8996/57f90a2fe5dc45b9945dd01d4d8ec8b0/FLAG9fc40e797 [2022-11-02 20:57:34,172 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:57:34,173 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/sv-benchmarks/c/array-fpi/res2.c [2022-11-02 20:57:34,179 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/data/197fd8996/57f90a2fe5dc45b9945dd01d4d8ec8b0/FLAG9fc40e797 [2022-11-02 20:57:34,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/data/197fd8996/57f90a2fe5dc45b9945dd01d4d8ec8b0 [2022-11-02 20:57:34,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:57:34,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:57:34,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:57:34,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:57:34,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:57:34,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:34,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616ac669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34, skipping insertion in model container [2022-11-02 20:57:34,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:34,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:57:34,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:57:34,891 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/sv-benchmarks/c/array-fpi/res2.c[587,600] [2022-11-02 20:57:34,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:57:34,920 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:57:34,932 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/sv-benchmarks/c/array-fpi/res2.c[587,600] [2022-11-02 20:57:34,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:57:34,953 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:57:34,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34 WrapperNode [2022-11-02 20:57:34,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:57:34,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:57:34,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:57:34,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:57:34,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:34,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:34,988 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 120 [2022-11-02 20:57:34,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:57:34,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:57:34,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:57:34,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:57:34,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:34,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:35,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:35,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:35,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:35,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:35,015 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:35,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:35,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:57:35,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:57:35,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:57:35,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:57:35,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (1/1) ... [2022-11-02 20:57:35,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:57:35,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:35,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:35,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:57:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:57:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:57:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:57:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:57:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:57:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:57:35,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:57:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:57:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:57:35,195 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:57:35,197 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:57:35,482 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:57:35,491 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:57:35,493 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-02 20:57:35,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:35 BoogieIcfgContainer [2022-11-02 20:57:35,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:57:35,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:57:35,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:57:35,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:57:35,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:57:34" (1/3) ... [2022-11-02 20:57:35,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1074777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:35, skipping insertion in model container [2022-11-02 20:57:35,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:34" (2/3) ... [2022-11-02 20:57:35,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1074777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:35, skipping insertion in model container [2022-11-02 20:57:35,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:35" (3/3) ... [2022-11-02 20:57:35,508 INFO L112 eAbstractionObserver]: Analyzing ICFG res2.c [2022-11-02 20:57:35,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:57:35,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:57:35,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:57:35,595 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4be86f61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:57:35,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:57:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:35,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:57:35,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:35,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:35,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:35,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1780399656, now seen corresponding path program 1 times [2022-11-02 20:57:35,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:35,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047705999] [2022-11-02 20:57:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:35,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:35,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:35,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047705999] [2022-11-02 20:57:35,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047705999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:35,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:35,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:35,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457941663] [2022-11-02 20:57:35,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:35,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:57:35,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:35,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:57:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:57:35,850 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:35,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:35,869 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-11-02 20:57:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:57:35,872 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 20:57:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:35,881 INFO L225 Difference]: With dead ends: 56 [2022-11-02 20:57:35,881 INFO L226 Difference]: Without dead ends: 26 [2022-11-02 20:57:35,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:57:35,888 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:35,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:57:35,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-02 20:57:35,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-02 20:57:35,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-02 20:57:35,936 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2022-11-02 20:57:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:35,937 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-02 20:57:35,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:35,939 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-02 20:57:35,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:57:35,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:35,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:35,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:57:35,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:35,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:35,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1279549768, now seen corresponding path program 1 times [2022-11-02 20:57:35,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:35,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536616718] [2022-11-02 20:57:35,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:35,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:36,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:36,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:36,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536616718] [2022-11-02 20:57:36,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536616718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:36,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:36,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:57:36,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089160348] [2022-11-02 20:57:36,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:36,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:57:36,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:36,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:57:36,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:57:36,225 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:36,383 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-11-02 20:57:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:57:36,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 20:57:36,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:36,410 INFO L225 Difference]: With dead ends: 57 [2022-11-02 20:57:36,410 INFO L226 Difference]: Without dead ends: 38 [2022-11-02 20:57:36,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:57:36,412 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:36,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 14 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:57:36,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-02 20:57:36,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-11-02 20:57:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:36,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-02 20:57:36,431 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2022-11-02 20:57:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:36,434 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-02 20:57:36,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-02 20:57:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:57:36,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:36,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:36,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:57:36,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:36,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1740145276, now seen corresponding path program 1 times [2022-11-02 20:57:36,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:36,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282377634] [2022-11-02 20:57:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:36,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:39,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:39,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282377634] [2022-11-02 20:57:39,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282377634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:39,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731609168] [2022-11-02 20:57:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:39,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:39,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:39,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:39,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:57:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:39,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-02 20:57:39,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:39,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:57:39,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:39,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-02 20:57:39,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:39,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-02 20:57:39,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:40,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:40,016 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:57:40,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-02 20:57:40,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:40,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-02 20:57:40,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:40,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:40,470 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:57:40,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-02 20:57:40,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:40,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-02 20:57:40,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:40,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2022-11-02 20:57:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:40,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:18,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:18,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:18,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:18,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731609168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:18,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:58:18,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 41 [2022-11-02 20:58:18,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912336066] [2022-11-02 20:58:18,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:18,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-02 20:58:18,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:18,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-02 20:58:18,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1349, Unknown=15, NotChecked=0, Total=1640 [2022-11-02 20:58:18,676 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:20,693 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2022-11-02 20:58:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:58:20,694 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-02 20:58:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:20,701 INFO L225 Difference]: With dead ends: 77 [2022-11-02 20:58:20,701 INFO L226 Difference]: Without dead ends: 72 [2022-11-02 20:58:20,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 46 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=470, Invalid=2271, Unknown=15, NotChecked=0, Total=2756 [2022-11-02 20:58:20,711 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 59 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 404 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:20,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 155 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 172 Invalid, 0 Unknown, 404 Unchecked, 0.4s Time] [2022-11-02 20:58:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-02 20:58:20,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2022-11-02 20:58:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 60 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2022-11-02 20:58:20,747 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 31 [2022-11-02 20:58:20,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:20,748 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2022-11-02 20:58:20,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2022-11-02 20:58:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:58:20,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:20,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:20,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:58:20,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:20,978 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:20,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1839245574, now seen corresponding path program 2 times [2022-11-02 20:58:20,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:20,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942805467] [2022-11-02 20:58:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:20,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:58:21,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:21,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942805467] [2022-11-02 20:58:21,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942805467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:21,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026360948] [2022-11-02 20:58:21,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:58:21,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:21,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:21,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:21,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:58:21,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:58:21,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:21,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:58:21,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:58:21,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:58:21,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026360948] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:21,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:58:21,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-02 20:58:21,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791915192] [2022-11-02 20:58:21,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:21,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:58:21,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:21,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:58:21,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:58:21,479 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:21,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:21,819 INFO L93 Difference]: Finished difference Result 138 states and 164 transitions. [2022-11-02 20:58:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:58:21,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-02 20:58:21,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:21,821 INFO L225 Difference]: With dead ends: 138 [2022-11-02 20:58:21,821 INFO L226 Difference]: Without dead ends: 72 [2022-11-02 20:58:21,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:58:21,823 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 100 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:21,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 32 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:58:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-02 20:58:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2022-11-02 20:58:21,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:21,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2022-11-02 20:58:21,835 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 33 [2022-11-02 20:58:21,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:21,836 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2022-11-02 20:58:21,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2022-11-02 20:58:21,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 20:58:21,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:21,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:21,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 20:58:22,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:22,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash 447877832, now seen corresponding path program 3 times [2022-11-02 20:58:22,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:22,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257594131] [2022-11-02 20:58:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:22,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:58:22,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:22,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257594131] [2022-11-02 20:58:22,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257594131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:22,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587239446] [2022-11-02 20:58:22,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:58:22,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:22,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:22,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:22,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:58:22,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:58:22,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:22,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:58:22,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:58:22,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:58:22,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587239446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:22,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:58:22,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-02 20:58:22,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120569862] [2022-11-02 20:58:22,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:22,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:58:22,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:22,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:58:22,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:58:22,650 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:22,951 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-11-02 20:58:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:58:22,952 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-02 20:58:22,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:22,953 INFO L225 Difference]: With dead ends: 65 [2022-11-02 20:58:22,953 INFO L226 Difference]: Without dead ends: 49 [2022-11-02 20:58:22,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:58:22,954 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:22,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 27 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:58:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-02 20:58:22,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2022-11-02 20:58:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-11-02 20:58:22,962 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 35 [2022-11-02 20:58:22,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:22,963 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-11-02 20:58:22,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:22,963 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-11-02 20:58:22,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:58:22,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:22,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:22,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:23,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:23,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:23,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:23,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1410382416, now seen corresponding path program 4 times [2022-11-02 20:58:23,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:23,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970334406] [2022-11-02 20:58:23,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:23,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:27,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:27,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970334406] [2022-11-02 20:58:27,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970334406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:27,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688839166] [2022-11-02 20:58:27,750 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:58:27,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:27,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:27,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:27,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_390016a0-7529-479f-ab0f-c2c585422c1a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:58:27,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:58:27,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:58:27,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-02 20:58:27,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:27,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:58:27,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 20:58:28,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:58:28,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-02 20:58:28,947 INFO L356 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2022-11-02 20:58:28,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 56 [2022-11-02 20:58:29,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:29,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:29,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:29,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:29,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 42 [2022-11-02 20:58:30,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:30,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:30,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:30,068 INFO L356 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-11-02 20:58:30,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 56 [2022-11-02 20:58:34,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:34,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:35,217 INFO L356 Elim1Store]: treesize reduction 224, result has 31.9 percent of original size [2022-11-02 20:58:35,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 136 treesize of output 201 [2022-11-02 20:58:43,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:43,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:43,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:43,419 INFO L356 Elim1Store]: treesize reduction 174, result has 26.3 percent of original size [2022-11-02 20:58:43,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 24 case distinctions, treesize of input 106 treesize of output 140 [2022-11-02 20:58:44,691 INFO L356 Elim1Store]: treesize reduction 112, result has 34.5 percent of original size [2022-11-02 20:58:44,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 113 treesize of output 140 [2022-11-02 20:58:47,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:47,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:58:47,828 INFO L356 Elim1Store]: treesize reduction 151, result has 36.6 percent of original size [2022-11-02 20:58:47,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 24 case distinctions, treesize of input 119 treesize of output 177 [2022-11-02 20:59:09,095 WARN L234 SmtUtils]: Spent 16.59s on a formula simplification. DAG size of input: 176 DAG size of output: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:59:09,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:59:09,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:59:10,097 INFO L356 Elim1Store]: treesize reduction 384, result has 25.7 percent of original size [2022-11-02 20:59:10,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 72 case distinctions, treesize of input 192 treesize of output 278 [2022-11-02 21:00:03,466 WARN L234 SmtUtils]: Spent 18.15s on a formula simplification. DAG size of input: 586 DAG size of output: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 21:00:03,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 21:00:04,038 INFO L356 Elim1Store]: treesize reduction 83, result has 42.8 percent of original size [2022-11-02 21:00:04,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 24 case distinctions, treesize of input 99 treesize of output 137 [2022-11-02 21:00:05,329 INFO L356 Elim1Store]: treesize reduction 56, result has 41.1 percent of original size [2022-11-02 21:00:05,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 108 treesize of output 119 [2022-11-02 21:00:06,285 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:00:06,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 106 treesize of output 126 [2022-11-02 21:00:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:06,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:00:10,374 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~c~0#1.base| Int) (v_ArrVal_331 Int) (v_ArrVal_328 Int) (v_ArrVal_326 Int)) (let ((.cse0 (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |ULTIMATE.start_main_~c~0#1.base|) (+ .cse3 |c_ULTIMATE.start_main_~c~0#1.offset|) v_ArrVal_326) (+ .cse3 |c_ULTIMATE.start_main_~c~0#1.offset| 4) v_ArrVal_328)))) (let ((.cse2 (store |c_#memory_int| |ULTIMATE.start_main_~c~0#1.base| .cse0))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_331 (+ (select .cse0 |c_ULTIMATE.start_main_~c~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_328 1)) (< (+ v_ArrVal_331 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_331)) |ULTIMATE.start_main_~c~0#1.base|) (+ |c_ULTIMATE.start_main_~c~0#1.offset| 4))) (+ (* c_~N~0 3) 1)) (not (<= v_ArrVal_326 1))))))) is different from false [2022-11-02 21:00:12,412 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~c~0#1.base| Int) (v_ArrVal_331 Int) (v_ArrVal_328 Int) (v_ArrVal_326 Int)) (let ((.cse2 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 4))) (let ((.cse1 (store |c_#memory_int| |ULTIMATE.start_main_~c~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_326) .cse2 v_ArrVal_328)))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_328 1)) (not (<= v_ArrVal_331 (+ v_ArrVal_326 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_326 1)) (< (+ v_ArrVal_331 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_331)) |ULTIMATE.start_main_~c~0#1.base|) .cse2)) (+ (* c_~N~0 3) 1))))))) is different from false [2022-11-02 21:01:18,437 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_324 Int) (|ULTIMATE.start_main_~c~0#1.base| Int) (v_ArrVal_322 Int) (v_ArrVal_321 Int) (v_ArrVal_331 Int) (|ULTIMATE.start_main_~b~0#1.base| Int) (v_ArrVal_319 Int) (v_ArrVal_328 Int) (v_ArrVal_326 Int)) (let ((.cse5 (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_319) (+ .cse7 4 |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_321)))) (let ((.cse0 (store |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base| .cse5))) (let ((.cse4 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 4)) (.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (let ((.cse6 (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_324)))) (store .cse6 |ULTIMATE.start_main_~c~0#1.base| (store (store (select .cse6 |ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_326) .cse4 v_ArrVal_328))))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_328 1)) (not (<= v_ArrVal_324 (+ v_ArrVal_322 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_322)) |ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (not (<= v_ArrVal_321 1)) (not (<= v_ArrVal_326 1)) (< (+ v_ArrVal_331 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_331)) |ULTIMATE.start_main_~c~0#1.base|) .cse4)) (+ (* c_~N~0 3) 1)) (not (<= v_ArrVal_331 (+ v_ArrVal_326 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_319 1)) (not (<= v_ArrVal_322 (+ (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse5 |c_ULTIMATE.start_main_~b~0#1.offset|))))))))))) is different from false [2022-11-02 21:01:20,576 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_324 Int) (|ULTIMATE.start_main_~c~0#1.base| Int) (v_ArrVal_322 Int) (v_ArrVal_321 Int) (v_ArrVal_331 Int) (|ULTIMATE.start_main_~b~0#1.base| Int) (v_ArrVal_319 Int) (v_ArrVal_328 Int) (v_ArrVal_326 Int)) (let ((.cse5 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse3 (store |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base| (store (store (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_319) .cse5 v_ArrVal_321)))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 4)) (.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (let ((.cse6 (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_324)))) (store .cse6 |ULTIMATE.start_main_~c~0#1.base| (store (store (select .cse6 |ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_326) .cse2 v_ArrVal_328))))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_328 1)) (< (+ v_ArrVal_331 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_331)) |ULTIMATE.start_main_~c~0#1.base|) .cse2)) (+ (* c_~N~0 3) 1)) (not (<= v_ArrVal_324 (+ v_ArrVal_322 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_322)) |ULTIMATE.start_main_~b~0#1.base|) .cse5)))) (not (<= v_ArrVal_322 (+ v_ArrVal_319 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_321 1)) (not (<= v_ArrVal_331 (+ v_ArrVal_326 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_326 1)) (not (<= v_ArrVal_319 1))))))))) is different from false